When the vehicle is shifted into park to turn off the engine the sensor shows it is not in park and will not let you turn the engine off.

- Elmira, NY, USA

My 2017 GMC Acadia shut off lost all power for a couple mins at a busy intersection in September 2020. All power restore after several minutes and attempts to restart. I took in to the dealership however they could not duplicate. Now on the 28th of December 2020, the vehicle lost all power again at the same busy intersection! no power at all! could not even turn my hazard lights on to warn traffic that was coming up behind me on the highway! the vehicle remained like this for 10-15 minutes! couldn't even have anyone push it off the road because we couldn't shift it to neutral either. I took it back to the dealership as GM advised and they still could not duplicate. The dealership tried but cannot make sense of why this keeps occurring randomly. I had my small children in the car this time and we are lucky we did not get rear ended! I fear that my family is not safe in this vehicle.

- Walkersville, WV, USA

Vehicle is put into park when stopped in a parking lot or in my garage but the message on the dash indicates it is not in park. This happens intermittently. The power remains on with lights not shutting off. Shifter harness was replaced in July 2020 per bulletin 19-na-206. The problem showed up again 3 months later.

- Mahtomedi, MN, USA

Gear shift would go into park but would not turn off engine, lock doors, turn off lights. Warning light read to "place in park."

- Norco, CA, USA

While driving in the rain on a highway, I experienced the blind side detection warning. The system shut itself down and no longer gave any side detection at all. After contacting GMC, they said there were no recalls on the vehicle. I saw a service bulletin online, N172097060, but they said my vehicle was not included.

- Centre, AL, USA

After shifting to park the vehicle will continuously state "shift to park" and will not allow the driver to turn the vehicle completely off or lock the doors.

- Ada, MI, USA

The 2017 GMC Acadia I own will not recognize when the vehicle is in park. It states to move to park to shut the vehicle off when the vehicle is already in park. This happens when trying to shut off the vehicle but I am unable to because of the "shift to park" warning. I have to push the stick forward and turn the car on and off several times for the message to disappear. Had this fixed by GMC but they refused to cover under powertrain warranty.

- Glenshaw, PA, USA

1 month ago received "shift to park" notices that would not allow the vehicle to be powered off. Would restart engine, move shifting lever multiple times, and eventually would allow vehicle to be powered off (electrically). Took to dealership and they replaced the shifting lever, reporting the issue was fixed. Two days ago, when parking, the engine shut off, but again received the shift to park notice, with electrical system still on. This time, took my foot off the brake and the car started rolling backwards. Could not restart engine, and shifting lever was stuck in place. Had to set the parking break and wait for a tow truck. Electrical system remained on the entire time. Fortunately this occurred in my driveway and not somewhere where I would have bee stranded.

- Princeton, NJ, USA

'steering assist reduced drive with care' warning light shows up at least once a month. The air conditioner and temperature gauge do not work when this is on. We had it checked and there was zero freon in it. Had that refilled totaling over $400 because it's a special kind that takes the 1234 hook up. Steering assist reduced drive with care warning light came on again like it does every month. Husband popped the hood to take a look and it appears freon has spewed while steering assist light is on, explaining why it was empty when we took it to be checked. The check engine light is also on now too. When powering vehicle off, a message on the screen says 'climate control not available when vehicle is powered off'. additionally we get a 'shift to park' message when we power off the vehicle. Ready to seek legal action

- Calera, AL, USA

Car will not recognize that the car is in park and will not shut off.

- Abilene, TX, USA

The vehicle does not recognize when it is in park. Sporadically vehicle will not go into park and thus can't leave vehicle. Safety concern! I understand this is a known issue.

- Georgetown, KY, USA

The vehicle, when parked, shows a warning that states"action required:shift to park" and the vehicle will not turn off. This has led to the vehicle dying in parking lots, at home, once when on vacation. The shift lever is in park, the dashboard shows that it is in park, and when the engine off button is pressed the vehicle will not turn off and asks the driver to shift the car to park, where it already is. This has been a hazard to our family and our families health as the vehicle will then die eventually because the battery runs out. It is apparent that there is a severe malfunction in the electrical/gearbox/computer system not recognizing where the shifter is at the moment. I would like to add a photo but if I were to turn the car on to take the photo the car likely will not turn off, and then die once again. This has been ongoing for approximately a month to 6 weeks. I will put the date below as approximately July 4th 2020.

- Sacramento, CA, USA

Although in park, the dash alerts the following message : 'shift to park' this alert does not allow the vehicle to be shut off fully as the radio still plays, lights remain in and the dash remains lit. Have tried to restart and shift into different gears then return to park as well as engage the emergency break. Nothing works to fix this.

- Lake Park, GA, USA

Purchased my 2017 Acadia(used) on October 2, 3019. Two days after taking delivery a message appeared saying "shift to park" while I was parked and vehicle was in park. Could not turn engine off. Left engine running while I exited the car. Eventually engine turned off. Took vehicle in to dealer. They said they repaired for which I paid. Now it's happening again.

- Olympia, WA, USA

Shift to park message. Car will not shut off even when in park. It says it needs to shift to park, even when it is in park.

- Buda, TX, USA

When the vehicle is put in park and attempted to shutoff, is message appears on dash that says "shift to park". this problem was reported to the dealer the 1st time it happened on June 11., 2018. The dealership replaced the shifter. On July 31, 2020 again the shift to park message appeared. The dealership again replaced the shifter, (that shorted out) and this time installed a wiring harness that had a resister installed in the harness to prevent damaged to the shifter assembly from the over current that goes to the shifter. The service advisor said they have had numerous vehicles with this problem and the com[any should do a recall. How long before it does it again and a another $631.36 repair bill.

- Ocala, FL, USA

1. the battery totally dies after sitting for 3 days. 2. sometimes a warning message appears "shift into park" when the shifting handle is in park and sometimes prevents turning the engine off. Sometimes after trying several times it stops the engine but dash lights remain on. Dealership says this is a common problem and they do not have a definative solution.

- Bradenton, FL, USA

Shift to park error message while depressing brake and shifting vehicle to park position not moving in stationary position and turning off vehicle error message occurs will not allow vehicle to turn off fully nor recognize vehicle is in park.

- Boonville, NY, USA

Vehicle will not shift into park so you can turn off vehicle and exit car. Cannot secure vehicle. What is is going to take to get this problem recalled" surely someone will not have to die because a vehicle will not shift into park" there is a class action lawsuit filed against GMC for this issue. Please do the right thing and have them recall this problem.

- Rome, GA, USA

Vehicle will not shift into park, even though the car is not moving. Cannot turn vehicle off while this message is being displayed. Cannot lock/secure vehicle while this message is displayed.

- Rome, GA, USA